The AR-15 is a simple rifle. Simple enough that people with zero training and minimal tools can use Youtube to build their very own rifle. On firearms rarely is a part of the gun up for debate when it comes to necessity. With AR-15s though, it seems like everything is up for debate. What's the right BCG? What's the best handguard? What about the sights? Today, we are asking, what about the dust cover?

What's a Dust Cover

When I say dust cover, you might picture a giant gun sock, or a tarp, or any other craziness that keeps dust off your platform. AR-15 fans will know what I am talking about though. On the AR, the dust cover is a small rectangular piece of metal that locks and closes at will. The dust cover on an AR-15 covers the ejection port of your rifle. When the bolt is retracted, the dust cover pops open to allow rounds to eject. The dust cover automatically opens when the gun fires or when the shooter manually operates the bolt. Dust covers are manually closed by the shooter by simply pressing it upward and locking it in place.

Spikes Tactical US Flag Laser Engraved Dust Cover

The Importance of a Dust Cover

In the Marine Corps, we were taught to always close the port when finished firing. NCOs would go about sniping Marines with open ejection ports, and it builds a habit of always closing the port after firing is over. We were taught that the dust cover was very important, and in austere conditions, it was critical in keeping your firearm running. A closed dust cover keeps your bolt and upper receiver free of debris. A well lubed and oiled AR will attract dust and dirt like a lollipop and ants. When crawling across the ground, or moving through a dust storm, or even dealing with snow, the dust cover is an invaluable piece of gear. This leads us to finally answering the question.

Tacfire Dust Cover Assembly

Do You Need an AR 15 Dust Cover?

Yes. If your rifle is intended to be used for duty or hardcore defensive use. Dust covers keep debris out and prevent issues with reliability. On a rifle designed for fighting, you want to reduce as many failure points as possible, and the dust cover does that. Is it necessary for all AR-15s? No, and lots of rifles don't even come with dust covers these days. These rifles are perfectly fine for plinking, hunting, competition, or other less than fighting tasks. Dust covers are always good to have, but are not necessary. Just be aware your upper receiver is not fully sealed against the elements, and you'll need to pay attention to that area. Dust covers come in various shapes, and they even come in various material designs. Regardless of what they look like and what they are made of, they are extremely handy to have and necessary for a fighting rifle. Outside of a fighting rifle, they are handy to have, but the rifle will run perfectly fine without one. Shop All Accessories
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